本文为您介绍如何在E-MapReduce上提交Flink作业以及查看作业。
背景信息
Dataflow集群中的Flink服务是以YARN模式部署的,您可以通过SSH方式登录Dataflow集群,在命令行中进行Flink作业提交。
基于YARN模式部署的Dataflow集群支持以Session模式、Per-Job Cluster模式和Application模式提交Flink作业。
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模式 |
描述 |
特点 |
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Session模式 |
Session模式会根据您设置的资源参数创建一个Flink集群,所有作业都将被提交到这个集群上运行。该集群在作业运行结束之后不会自动释放。 例如,某个作业发生异常,导致一个Task Manager关闭,则其他所有运行在该Task Manager上的作业都会失败。另外由于同一个集群中只有一个Job Manager,随着作业数量的增多,Job Manager的压力会相应增加。 |
根据以上特点,该模式适合部署需要较短启动时间且运行时间相对较短的作业。 |
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Per-Job Cluster模式 |
当使用Per-Job Cluster模式时,每次提交一个Flink作业,YARN都会为这个作业新启动一个Flink集群,然后运行该作业。当作业运行结束或者被取消时,该作业所属的Flink集群也会被释放。 |
根据以上特点,该模式通常适合运行时间较长的作业。 |
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Application模式 |
当使用Application模式时,每次提交一个Flink Application(一个Application包含一个或多个作业),YARN都会为这个Application新启动一个Flink集群。当Application运行结束或者被取消时,该Application所属的Flink集群也会被释放。 该模式与Per-Job模式不同的是,Application对应的JAR包中的 如果提交的JAR包中包含多个作业,则这些作业都会在该Application所属的集群中执行。 |
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前提条件
已创建Flink模式的Dataflow集群,详情请参见创建集群。
提交并查看Flink作业
本文使用Flink自身提供的TopSpeedWindowing示例进行介绍,该示例是一个会长时间运行的流作业。
您可以根据需求,选择以下三种模式提交并查看作业:
Session模式
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通过SSH方式连接集群的Master节点,具体操作请参见登录集群Master节点。
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执行以下命令,启动YARN Session。
yarn-session.sh --detached执行成功后,系统会返回Application ID。例如,
application_1750137174986_0001,后续将使用<application_XXXX_YY>表示。mr.aliyuncs.com:33879 of application 'application_1750137174986_0001'. JobManager Web Interface: http://core-1-1.c-1f6ec9xxx.cn-hangzhou.emr.aliyuncs.com:33879 2025-06-17 13:19:20,152 INFO org.apache.flink.yarn.cli.FlinkYarnSessionCli [] - The Flink YARN session cluster has been started in detached mode. In order to stop Flink gracefully, use the following command: $ echo "stop" | ./bin/yarn-session.sh -id application_1750137174986_0001 If this should not be possible, then you can also kill Flink via YARN's web interface or via: $ yarn application -kill application_1750137174986_0001 Note that killing Flink might not clean up all job artifacts and temporary files. -
执行以下命令,提交作业。
flink run --detached /opt/apps/FLINK/flink-current/examples/streaming/TopSpeedWindowing.jar提交成功后,系统会返回如下类似信息。
[root@master-1-1(172.17.xxx.xxx) ~]# flink run --detached /opt/apps/FLINK/flink-current/examples/streaming/TopSpeedWindowing.jar SLF4J: Class path contains multiple SLF4J bindings. SLF4J: Found binding in [jar:file:/opt/apps/FLINK/flink-1.17.2-1.0.10/lib/log4j-slf4j-impl-2.17.1.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: Found binding in [jar:file:/opt/apps/HADOOP-COMMON/hadoop-3.2.1-1.3.2-alinux3/share/hadoop/common/lib/slf4j-log4j12-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation. SLF4J: Actual binding is of type [org.apache.logging.slf4j.Log4jLoggerFactory] 2025-06-17 13:29:00,205 INFO org.apache.flink.yarn.cli.FlinkYarnSessionCli [] - Found Yarn properties file under /tmp/.yarn-properties-root. 2025-06-17 13:29:00,205 INFO org.apache.flink.yarn.cli.FlinkYarnSessionCli [] - Found Yarn properties file under /tmp/.yarn-properties-root. Executing example with default input data. Use --input to specify file input. Printing result to stdout. Use --output to specify output path. 2025-06-17 13:29:00,667 WARN org.apache.flink.yarn.configuration.YarnLogConfigUtil [] - The configuration directory ('/etc/taihao-apps/flink-conf') already contains a LOG4J config file.If you want to use logback, then please delete or rename the log configuration file. 2025-06-17 13:29:00,864 INFO org.apache.hadoop.yarn.client.RMProxy [] - Connecting to ResourceManager at master-1-1.c-1f6ec9192d1528ec.cn-hangzhou.emr.aliyuncs.com/172.17.xxx.xxx:8032 2025-06-17 13:29:01,061 INFO org.apache.hadoop.yarn.client.AHSProxy [] - Connecting to Application History server at master-1-1.c-1f6ec9192d1528ec.cn-hangzhou.emr.aliyuncs.com/172.17.xxx.xxx:10200 2025-06-17 13:29:01,072 INFO org.apache.flink.yarn.YarnClusterDescriptor [] - No path for the flink jar passed. Using the location of class org.apache.flink.yarn.YarnClusterDescriptor to locate the jar 2025-06-17 13:29:01,208 INFO org.apache.flink.yarn.YarnClusterDescriptor [] - Found Web Interface core-1-1.c-1f6ecxxx.cn-hangzhou.emr.aliyuncs.com:33879 of application 'application_1750137174986_0001'. Job has been submitted with JobID 3785db18d371326758d7843dd2a1xxx其中
3785db18d371326758d7843dd2a1****为该作业ID,后续将使用<jobId>表示。 -
执行以下命令,查看作业状态。
flink list -t yarn-session -Dyarn.application.id=<application_XXXX_YY>返回如下类似信息。
------------------ Running/Restarting Jobs ------------------- 16.06.2025 18:20:55 : 3785db18d371326758d7843dd2a1**** : CarTopSpeedWindowingExample (RUNNING)您也可以通过Web UI的方式查看作业状态,详情请参见通过Web UI查看作业状态。
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执行以下命令,停止作业。
flink cancel -t yarn-session -Dyarn.application.id=<application_XXXX_YY> <jobId>
Per-Job Cluster模式
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通过SSH方式连接集群的Master节点,具体操作请参见登录集群Master节点。
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执行以下命令,提交作业。
flink run -t yarn-per-job --detached /opt/apps/FLINK/flink-current/examples/streaming/TopSpeedWindowing.jar提交成功后,系统会返回如下类似信息。
$ yarn application -kill application_1750125819948_0003 Note that killing Flink might not clean up all job artifacts and temporary files. 2025-06-17 10:44:46,268 INFO org.apache.flink.yarn.YarnClusterDescriptor [] - Found Web Interface core-1-1.c-b9693c.xxx.cn-hangzhou.emr.aliyuncs.com:38037 of application 'application_1750125819948_0003'. Job has been submitted with JobID 451aded93de19d6cd238ed3b466xxx You have new mail in /var/spool/mail/root其中
application_1750125819948_****为Application ID,后续将使用<application_XXXX_YY>表示;f5f980ac631192b02548235f1bbe****为该作业ID,后续将使用<jobId>表示。 -
您可以执行以下命令,查看作业状态。
flink list -t yarn-per-job -Dyarn.application.id=<application_XXXX_YY>您也可以通过Web UI的方式查看作业状态,详情请参见通过Web UI查看作业状态。
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执行以下命令,停止作业。
flink cancel -t yarn-per-job -Dyarn.application.id=<application_XXXX_YY> <jobId>
Application模式
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通过SSH方式连接集群的Master节点,具体操作请参见登录集群Master节点。
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执行以下命令,提交作业。
flink run-application -t yarn-application /opt/apps/FLINK/flink-current/examples/streaming/TopSpeedWindowing.jar提交成功后,系统会返回如下类似信息。
[root@master-1-1(172.17.xxx.xxx) ~]# flink run-application -t yarn-application /opt/apps/FLINK/flink-current/examples/streaming/TopSpeedWindowing.jar SLF4J: Class path contains multiple SLF4J bindings. SLF4J: Found binding in [jar:file:/opt/apps/FLINK/flink-1.17.2-1.0.10/lib/log4j-slf4j-impl-2.17.1.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: Found binding in [jar:file:/opt/apps/HADOOP-COMMON/hadoop-3.2.1-1.3.2-alinux3/share/hadoop/common/lib/slf4j-log4j12-1.7.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation. SLF4J: Actual binding is of type [org.apache.logging.slf4j.Log4jLoggerFactory] 2025-06-17 10:57:05,106 INFO org.apache.flink.yarn.cli.FlinkYarnSessionCli [] - Found Yarn properties file under /tmp/.yarn-properties-root. 2025-06-17 10:57:05,106 INFO org.apache.flink.yarn.cli.FlinkYarnSessionCli [] - Found Yarn properties file under /tmp/.yarn-properties-root. 2025-06-17 10:57:05,233 WARN org.apache.flink.yarn.configuration.YarnLogConfigUtil [] - The configuration directory ('/etc/taihao-apps/flink-conf') already contains a LOG4J config file.If you want to use logback, then please delete or rename the log configuration file. 2025-06-17 10:57:05,453 INFO org.apache.hadoop.yarn.client.RMProxy [] - Connecting to ResourceManager at master-1-1.c-b9693c1xxx.cn-hangzhou.emr.aliyuncs.com/172.17.xxx.xxx:8032 2025-06-17 10:57:05,604 INFO org.apache.hadoop.yarn.client.AHSProxy [] - Connecting to Application History server at master-1-1.c-b9693xxx 3c131faf601f.cn-hangzhou.emr.aliyuncs.com/172.17.108.111:10200 2025-06-17 10:57:05,612 INFO org.apache.flink.yarn.YarnClusterDescriptor [] - No path for the flink jar passed. Using the location of class org.apache.flink.yarn.YarnClusterDescriptor to locate the jar 2025-06-17 10:57:05,724 INFO org.apache.hadoop.conf.Configuration [] - found resource resource-types.xml at file:/etc/taihao-apps/hadoop-conf/resource-types.xml 2025-06-17 10:57:05,776 INFO org.apache.flink.yarn.YarnClusterDescriptor [] - The configured JobManager memory is 1600 MB. YARN will allocate 1664 MB to make up an integer multiple of its minimum allocation memory (128 MB, configured via 'yarn.scheduler.minimum-allocation-mb'). The extra 64 MB may not be used by Flink. 2025-06-17 10:57:05,776 INFO org.apache.flink.yarn.YarnClusterDescriptor [] - The configured TaskManager memory is 1728 MB. YARN will allocate 1792 MB to make up an integer multiple of its minimum allocation memory (128 MB, configured via 'yarn.scheduler.minimum-allocation-mb'). The extra 64 MB may not be used by Flink. 2025-06-17 10:57:05,776 INFO org.apache.flink.yarn.YarnClusterDescriptor [] - Cluster specification: ClusterSpecification{masterMemoryMB=1600, taskManagerMemoryMB=1728, slotsPerTaskManager=1} 2025-06-17 10:57:10,219 INFO org.apache.flink.yarn.YarnClusterDescriptor [] - Cannot use kerberos delegation token manager, no valid kerberos credentials provided. 2025-06-17 10:57:10,227 INFO org.apache.flink.yarn.YarnClusterDescriptor [] - Submitting application master application_1750125819948_0004 2025-06-17 10:57:10,271 INFO org.apache.hadoop.yarn.client.api.impl.YarnClientImpl [] - Submitted application application_1750125819948_0004 2025-06-17 10:57:10,271 INFO org.apache.flink.yarn.YarnClusterDescriptor [] - Waiting for the cluster to be allocated 2025-06-17 10:57:10,278 INFO org.apache.flink.yarn.YarnClusterDescriptor [] - Deploying cluster, current state ACCEPTED 2025-06-17 10:57:17,825 INFO org.apache.flink.yarn.YarnClusterDescriptor [] - YARN application has been deployed successfully. 2025-06-17 10:57:17,825 INFO org.apache.flink.yarn.YarnClusterDescriptor [] - Found Web Interface core-1-1.c-b9693c1xxx.cn-hangzhou.emr.aliyuncs.com:42563 of application 'application_1750125819948_0004'.其中,
application_1750125819948_0004为已提交的Flink作业的YARN Application ID,后续将使用<application_XXXX_YY>表示。 -
执行以下命令,查看作业状态。
flink list -t yarn-application -Dyarn.application.id=<application_XXXX_YY>返回如下类似信息,其中
4db32b5339e6d64de2a1096c4762****为该作业的<jobId>。------------------ Running/Restarting Jobs ------------------- 16.06.2025 18:20:55 : 4db32b5339e6d64de2a1096c4762**** : CarTopSpeedWindowingExample (RUNNING)您也可以通过Web UI的方式查看作业状态,详情请参见通过Web UI查看作业状态。
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执行以下命令,停止作业。
flink cancel -t yarn-application -Dyarn.application.id=<application_XXXX_YY> <jobId>
指定作业配置
Flink提供三种指定作业配置的方式:
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方式一:在作业代码中,指定配置项的值,详情请查看Flink配置。
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方式二:使用
flink run命令提交作业时,通过-D指定配置项的值,例如flink run-application -t yarn-application -D state.backend=rocksdb...。 -
方式三:在
/etc/taihao-apps/flink-conf/flink-conf.yaml配置文件中指定配置项的值。
如果没有通过这三种方式指定,则使用默认值,配置参数详情请参见Apache Flink官网。
通过Web UI查看作业状态
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访问Web UI。
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在左侧导航栏,选择EMR on ECS。
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在顶部菜单栏处,根据实际情况选择地域和资源组。
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在EMR on ECS页面,单击目标集群的集群ID。
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单击上方的访问链接与端口页签。
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在访问链接与端口页面,单击YARN UI所在行的链接。
访问Web UI的详细信息,请参见通过控制台访问开源组件Web界面。
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单击Application ID。
在 Hadoop YARN ResourceManager 的 All Applications 页面,找到名称为 Flink per-job cluster 的应用,单击其对应的 Application ID(例如
application_1628232179762_0002)。 -
单击Tracking URL的链接。
在 Application Overview 区域,Tracking URL 对应的链接显示为 ApplicationMaster。
进入Apache Flink Dashboard页面,即可查看作业的状态。
Apache Flink Dashboard 概览页面显示当前运行的作业信息,包括作业名称(例如 CarTopSpeedWindowingExample)、运行时长、任务状态(RUNNING)以及可用 Task Slot 数量等。
相关文档
Flink on YARN的更多信息,请参见Apache Hadoop YARN。